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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 284 · 40 sums
TalentJR

The trick (Dwandwa Yoga): For abc: columns D(a) | D(ab) | D(abc) | D(bc) | D(c). D(a) = a², D(ab) = 2ab, D(abc) = 2ac + b², D(abcd) = 2ad + 2bc. Combine from the right with carries.

NameDateTime takenScore ___ / 40
  1. 1.893² =
  2. 2.7978² =
  3. 3.256² =
  4. 4.334² =
  5. 5.9007² =
  6. 6.536² =
  7. 7.116² =
  8. 8.790² =
  9. 9.405² =
  10. 10.6986² =
  11. 11.396² =
  12. 12.4875² =
  13. 13.238² =
  14. 14.976² =
  15. 15.923² =
  16. 16.7840² =
  17. 17.2961² =
  18. 18.635² =
  19. 19.849² =
  20. 20.533² =
  21. 21.6935² =
  22. 22.655² =
  23. 23.368² =
  24. 24.5686² =
  25. 25.955² =
  26. 26.671² =
  27. 27.995² =
  28. 28.7499² =
  29. 29.7499² =
  30. 30.102² =
  31. 31.495² =
  32. 32.568² =
  33. 33.468² =
  34. 34.971² =
  35. 35.971² =
  36. 36.669² =
  37. 37.120² =
  38. 38.705² =
  39. 39.6144² =
  40. 40.3486² =

Answer key

  1. 797449
  2. 63648484
  3. 65536
  4. 111556
  5. 81126049
  6. 287296
  7. 13456
  8. 624100
  9. 164025
  10. 48804196
  11. 156816
  12. 23765625
  13. 56644
  14. 952576
  15. 851929
  16. 61465600
  17. 8767521
  18. 403225
  19. 720801
  20. 284089
  21. 48094225
  22. 429025
  23. 135424
  24. 32330596
  25. 912025
  26. 450241
  27. 990025
  28. 56235001
  29. 56235001
  30. 10404
  31. 245025
  32. 322624
  33. 219024
  34. 942841
  35. 942841
  36. 447561
  37. 14400
  38. 497025
  39. 37748736
  40. 12152196

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